Question

A force of 10 Newton for 20 sec of mass 2 kg at rest calculate energy and workdone for applied force

Answer 1

Answer:

Force = mass× acceleration

F =10 N

mass = 2 kg

a = F/m = 10/2 = 5 m/s²

i)now, u = 0

t = 3 sec

v = u + at = 0 + 3×5 = 15 m/s

ii) initial momentum = mu = 2×0 =0

final momentum = mv = 2×15 = 30 kg m/s

change in momentum = final momentum - initial momentum  

                                 = 30 -0 = 30 kg m/s

Answer 2

Answer:

30 -0 = 30 kg m/s

Explanation:

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